Okay, this has been driving me mad all night. I can't remember which episode it is, or what call he's imitating, when this happens...

All I remember is that Cartman is making this weird animal noise, mating call type thing. It's not a turkey call, it's like..."gh-GEE-uh!" or "er-EE-nuh!" I can't spell sounds, who am I kidding? Anyway, he's making this noise that is supposedly going to attract some animal or person, like hippies or something. I don't think it's the hippie episode or hippies, but anyway.

I want to say Kyle or Stan asks him what he's doing, and Cartman says something about how he speaks...whatever it is that he's trying to attract. I don't know if this really happens or not, though.

I know this is super vague, so I'm counting on my fellow South Park citizens to help me out.